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In the following images, unless otherwise specified:
  • numerals represent ETs (steps per '2')
  • multiple appearances of the same number are different mappings
  • rotation of the ET numbers indicates octave stretch of the TOP tuning of the ET (15 cents stretch = 90° clockwise rotation)
  • lines are temperaments (where a single comma is tempered out)
  • hexagons are contours of maximum Tenney-weighted damage of TOP tunings

5-limit


tn_pts-2-3-5-e2-amp-hand-annotated-gray.jpg
{2,3,5} PTS with handwritten annotations
from A Middle Path

tn_pts-2-3-5-e2-twtop.jpg
Paul Erlich > ‎The Xenharmonic Alliance (2011-02-04)
projective tuning space based on {2,3,5}
numerals at ETs represent steps per '2'
hexagons are contours of maximum Tenney-weighted damage of TOP tunings

tn_pts-2-3-5-e2-twtop-tlin-zo4.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-22)
zoomed waaaay out
tn_pts-2-3-5-e2-twtop-tlin-zo3.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-22)
zoomed-out still more
tn_pts-2-3-5-e2-twtop-tlin-zo2.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-22)
zoomed-out more
tn_pts-2-3-5-e2-twtop-tlin-zo1.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-22)
zoomed-out
tn_pts-2-3-5-e2-twtop-tlin.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-04-10)
5-limit projective tuning space showing equal temperaments and good rank-two temperaments (or "temperament families"). Concentric hexagons indicate TOP damage (of TOP tuning) up to 10 in increments of 1.
tn_pts-2-3-5-e2-twtop-tlin-graybg-zi1.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-25)
zoomed-in
tn_pts-2-3-5-e2-twtop-tlin-graybg-zi2.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-25)
zoomed-in more
tn_pts-2-3-5-e2-twtop-tlin-zi3.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-25)
zoomed-in still more
tn_pts-2-3-5-e2-twtop-tlin-zi4.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-25)
zoomed way in
tn_pts-2-3-5-e2-twtop-tlin-zi5.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-25)
zoomed way way in

tn_pts-2-3-5-e2-breed-twtop-tlin-z0.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-26)
showing all three elements of each 5-limit breed
zoom level 0
tn_pts-2-3-5-e2-breed-twtop-tlin-z1.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-26)
showing all three elements of each 5-limit breed
zoom level 1
tn_pts-2-3-5-e2-breed-twtop-tlin-z2.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-26)
showing all three elements of each 5-limit breed
zoom level 2
tn_pts-2-3-5-e2-breed-twtop-tlin-z3.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-26)
showing all three elements of each 5-limit breed
zoom level 3
tn_pts-2-3-5-e2-breed-twtop-tlin-z4.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-26)
showing all three elements of each 5-limit breed
zoom level 4
tn_pts-2-3-5-e2-breed-twtop-tlin-z5.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-26)
showing all three elements of each 5-limit breed
zoom level 5
tn_pts-2-3-5-e2-breed-twtop-tlin-z6.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-26)
showing all three elements of each 5-limit breed
zoom level 6
tn_pts-2-3-5-e2-breed-twtop-tlin-z7.jpg
Paul Erlich > ‎The Xenharmonic Alliance - Mathematical Theory (2014-08-26)
showing all three elements of each 5-limit breed
zoom level 7

11-limit subgroups


tn_pts-2-3-7-e2-twtop.jpg
Paul Erlich > ‎The Xenharmonic Alliance (2011-02-04)
projective tuning space based on {2,3,7}
numerals at ETs represent steps per '2'
hexagons are contours of maximum Tenney-weighted damage of TOP tunings
tn_pts-2-3-7-e2-twtop-z0.jpg
Paul Erlich > ‎The Xenharmonic Alliance (2011-02-06)
projective tuning space based on {2,3,7}
zoomed way out!

tn_pts-2-3-9-e2-twtop.jpg
Paul Erlich > ‎The Xenharmonic Alliance (2011-02-06)
"projective tuning space" "based on" "{2,3,9}"
numerals at "ETs" represent steps per '2'
hexagons are "contours" of "maximum Tenney-weighted damage" of "TOP tunings"

this one is not like the others! 9/3 is considered a different interval than 3, with complexity log(27) rather than log(3), and susceptibility to damage 1/log(27) instead of 1/log(3) -- whatever that means!

tn_pts-2-3-11-e2-twtop.jpg
Paul Erlich > ‎The Xenharmonic Alliance (2011-02-06)
projective tuning space based on {2,3,11}
numerals at ETs represent steps per '2'
hexagons are contours of maximum Tenney-weighted damage of TOP tunings

tn_pts-2-5-7-e2-twtop.jpg
Paul Erlich > ‎The Xenharmonic Alliance (2011-02-04)
projective tuning space based on {2,5,7}
numerals at ETs represent steps per '2'
hexagons are contours of maximum Tenney-weighted damage of TOP tunings

tn_pts-2-5-9-e2-twtop.jpg
Paul Erlich > ‎The Xenharmonic Alliance (2011-02-06)
projective tuning space based on {2,5,9}
numerals at ETs represent steps per '2'
hexagons are contours of maximum Tenney-weighted damage of TOP tunings

tn_pts-2-5-11-e2-twtop.jpg
Paul Erlich > ‎The Xenharmonic Alliance (2011-02-06)
projective tuning space based on {2,5,11}
numerals at ETs represent steps per '2'
hexagons are contours of maximum Tenney-weighted damage of TOP tunings

tn_pts-2-7-9-e2-twtop.jpg
Paul Erlich > ‎The Xenharmonic Alliance (2011-02-06)
projective tuning space based on {2,7,9}
numerals at ETs represent steps per '2'
hexagons are contours of maximum Tenney-weighted damage of TOP tunings

tn_pts-2-7-11-e2-twtop.jpg
Paul Erlich > ‎The Xenharmonic Alliance (2011-02-06)
projective tuning space based on {2,7,11}
numerals at ETs represent steps per '2'
hexagons are contours of maximum Tenney-weighted damage of TOP tunings

tn_pts-2-9-11-e2-twtop.jpg
Paul Erlich > ‎The Xenharmonic Alliance (2011-02-06)
projective tuning space based on {2,9,11}
numerals at ETs represent steps per '2'
hexagons are contours of maximum Tenney-weighted damage of TOP tunings

3.5.7, tritave (3-1) based


tn_pts-3-5-7-e3-twtop.jpg
Paul Erlich > ‎The Xenharmonic Alliance (2011-02-04)
projective tuning space based on {3,5,7}
numerals at ETs represent steps per '3'
hexagons are contours of maximum Tenney-weighted damage of TOP tunings